Influence of Anodic Spark Mode Parameters on the Properties of MAO-Coatings

摘要

The influence of microarc oxidation (MAO) parameters of pulse duration of 100 µs, 200 µs, 400 µs, frequencies of 50 Hz, 70 Hz, 100 Hz, voltage of 350 V, 450V, 600V, and MAO time on the characteristics of coatings was studied. The morphology and composition of coatings are investigated. It is shown that the largest change in the morphology and composition has the coating with a thickness of 70 µm, formed under the MAO mode, frequency of 70 Hz, duration 200 µs, 600 V. The control of the MAO parameters leads to a change in the mechanism of coating formation.